Invalid&#39;s bed.



No. 653,440. Patented July 1,1900. 1

A. B. CLARK.

INVALIDS BED. (Appliqation' filed Aug. 1, 1898.) 1 (No Model.)

2, 5 WITNESSES: lA/VE/VTOH UNITnD STATES PATENT OFFICE.

ALBERT B. CLARK, OF HAMBURG, NEW YORK.

INVALIDS BED.

SPECIFICATION forming part of Letters Patent No. 653,440, dated July 10, 1900.

4 Application iiletlAngust 1 1898.

To all whom, it may concern:

Be it known that I, ALBERT B. CLARK, a citizen of the United States, residing at Hamburg, in the county of Erie and State of New York, have invented certain new and useful Improvements in Invalids Beds, of which the following is a specification.

My invention relates to'improvements in fracture and invalids cots; and the object is to provide a supplementary adjustable frame within the main bedframe which can be easily raised to or lowered from the patient to allow the changing of bedclothes. It also relates to an adjustable pillow-frame, the mechanism employed to raise and lower the adjustable bed-frame, and the mechanism employed to operate the adjustable pillow, all of which will be fully and clearly hereinafter described and claimed, reference being had to the accompanying drawings,in which- Figure 1 represents a side elevation of my improved bedstead. Fig. 2 represents a front view of the same. Fig. 3 represents a rear view of the bedstead. Fig. 4 represents a detached view of a portion of the footboard, illustrating the means employed to lock the elevating mechanism. Fig. 5 represents a detached View of the cross-bar at the head of the bed, showing the construction of the cog mechanism employed to elevate the supplementary frame. Fig.6 represents a section through a portion of the frame on line an, Fig. 2, to illustrate the slideway in the main frame. Fig. 7 is an enlarged transverse section through the canvas-s11 pportin g tubes and the canvas on or about line b b, Fig. 1.

. In referring to the drawings in detail like numerals represent like parts.

The main frame proper is composed of side bars 1, the head comprising the front substantially-vertical bars 2 and 3, the headboard 4, which joins the tops of the bars 2 and 3, the middle cross-bar 5, and the lower cross-bar 6, and the foot comprising the substantially-vertical bars 7 ,which are duplicates and therefore denoted by the same numeral, and the upper middle and bottom horizontal cross-bars 8, 9, and 10, and the central vertical brace or bar 19. The substantially-vertical bars 2, 3, and 7 are providedwith longitudinal grooves 11, forming slideways, and

Serial No. 687,463. (No model.)

the supplementary adjustable frame 12 is provided with extensions 13, fitting in said slideways.

To elevate and lower the adjustable frame,

= a toothed bar 14 is secured to said frame by .means of the brace 15, and a shaft 15 extends the entire length of the bed, with its ends supported in the middle cross-braces of the head and foot of the bed, respectively. Upon the shaft are rigidly secured cog-wheels 16, which are adapted to mesh with the toothed bars 14, substantially as shown in Fig. 5. A ratchet-wheel 17 is also rigidly mounted upon the shaft, at or near each end thereof, and pawls 1S,piv0tall y mounted upon the cross-bars, are adapted to engage with the ratchet-wheels to prevent the rotation of the shaft in one direction. Two of the toothed bars and the cog-wheels are e1nployedone set at each end of the frame-and both cogwheels are rigidly mounted upon the shaft and are of substantially the same size, thus providing means for lifting both ends of the adjustable supplementary frame equally, the rear set being preferably arranged directly in front of the central vertical brace 19. The vertical bars are provided with holes through which horizontal tubular bars 20, preferably formed of gas-pipe, are passed and secured in place by means of the nuts 21. Between these tubes is supported an upper bed portion of canvas 22 or similar material, the canvas being provided With looped sides 23, through which the tubes are passed. (See Fig. 7.) An adjustable pillow-frame 24 is also provided, the bent ends 25 of the frame being pivotallysecured to the horizontal tubes 20 by springing them into openings into the tubes, substantially as shown in Fig. .7. The pillow-frame is also provided with a covering of canvas or similar material 25. A rod 26, having a forked upper end each of the branches of which is secured to the pillowframe, is used to adjust the position of the same, a rope 28 being attached at its lower end to the lower extreme of the forked rod, then passed over a pulley 29, and secured at its opposite end to a lever 30, pivoted at one extreme to the frame. To look the lever in its position when the pillow-frame is adjusted at the right angle, a series of holes or openings 31 are provided in the vertical bar 3, and a pin 32 is inserted in the nearest opening to limit the upward movement of the lever.

The raised position of the pillow-frame is shown by full lines.

The pulley 33 (shown in Fig. 3) is for supporting the weight generally used to hold fractured limbs in position.

With my improved bed the clothes can be easily changed without removing the patient from the bed by lowering the supplementary frame, removing and changing the clothes ihereon, the canvas supporting the patient in the meanwhile, then elevating said frame to its former position, first placing a clean canvas over the clean clothes, removing the bars from the loops in the soiled canvas and inserting them in the loops in the clean canvas, and also removing the soiled canvas by pulling, it from under the patient.

I claim as my invention- A bed for invalids, &c., comprising a main movement upon said pivot, a rope extending from said lever to the lower portion of said forked arm, and a pin adapted to fit into any one of the holes in the frame-post to support the lever in any position to which it may be adjusted, as set forth.

ALBERT l3. CLARK.

Vitnesses:

O. H. W 001), ELIAS HOAG. 

